A short bunch of metal keys swinging and settling: four clinks that get closer together and quieter, each one a bright metallic ring with a small low thud under it. Use it for character entrances, pockets, a janitor walking past, or any scene where a person should be heard before they are seen.
four clinks at 0.00 / 0.085 / 0.150 / 0.205 s, each a different pitch set (a bunch of keys never rings the same way twice) each clink: three inharmonic sines from a fixed list (2310/3420/4970 Hz, then 2180/3260/4720, 2450/3610/5230, 2270/3390/4880), 40 ms each, 0.5 ms attack, 30 ms decay metal edge: white noise 25 ms through a high-pass at 3.2 kHz, level 0.18, 1 ms attack, 20 ms decay low thud under each clink: sine 148 Hz falling to 96 Hz over 35 ms, level 0.13, 45 ms decay levels of the four clinks: 1.00 / 0.82 / 0.68 / 0.55 (the swing dying down) seam: single shot, buffer 0.27 s (the last clink is gone by 250 ms; no silent tail)